Prevent chrome.app JSON schema from loading on every page

chrome/test/data/extensions/api_test/crazy_extension/background.js

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This test is for bizarre things that extensions probably will do. We just
 // need to ensure that behaviour is predictable.
 
 chrome.test.runTests([
   function accessNonexistentIframe() {
     var iframe = document.createElement("iframe");
     iframe.src = document.location;
     var iteration = 0;
     iframe.addEventListener('load', function() {
       switch (iteration) {
         case 0: {
-          // First test is that chrome.webstore doesn't even get defined if it
-          // was never accessed.
+          // First test is that chrome.app doesn't even get defined if it was
+          // never accessed.
           var iframeChrome = iframe.contentWindow.chrome;
           document.body.removeChild(iframe);
-          chrome.test.assertEq(undefined, iframeChrome.webstore);
+          chrome.test.assertEq(undefined, iframeChrome.app);
           document.body.appendChild(iframe);
           break;
         }
         case 1: {
           // Second test is that it does if accessed before removal.
           var iframeChrome = iframe.contentWindow.chrome;
-          var iframeChromeWebstore = iframeChrome.webstore;
-          chrome.test.assertTrue(typeof(iframeChromeWebstore) == 'object');
+          var iframeChromeApp = iframeChrome.app;
+          chrome.test.assertTrue(typeof(iframeChromeApp) == 'object');
           document.body.removeChild(iframe);
-          chrome.test.assertTrue(typeof(iframeChrome.webstore) == 'object');
+          chrome.test.assertTrue(typeof(iframeChrome.app) == 'object');
           document.body.appendChild(iframe);
           break;
         }
         case 2: {
           // Third test is that accessing API methods doesn't crash the
           // renderer if the frame doesn't exist anymore.
           var iframeChromeApp = iframe.contentWindow.chrome.app;
           document.body.removeChild(iframe);
           chrome.test.assertEq(undefined, iframeChromeApp.getDetails());
           chrome.test.succeed();
           break;
         }
       }
       iteration++;
     });
     document.body.appendChild(iframe);
   }
 ]);